feat(app): Flutter-клиент — логин, дашборд, потоки, категории, транзакции, правила

Riverpod + go_router с auth-guard, NavigationRail на широком экране и bottom bar на узком. Токены в flutter_secure_storage, на web access живёт в памяти. Интерцептор подставляет токен и делает ровно один refresh на 401. Деньги приходят строками и форматируются через Decimal: парсить их в double значило бы терять копейки ровно там, где бэкенд их бережёт.
2026-09-18 13:44:09 +03:00
parent b9c12fa1a1
commit ce0966fca2
99 changed files with 6284 additions and 0 deletions
@@ -0,0 +1,160 @@
+import 'package:dio/dio.dart';
+import 'package:fintracker_api/fintracker_api.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../core/api/api_client.dart';
+
+class TransactionsFilter {
+  const TransactionsFilter({
+    this.q,
+    this.from,
+    this.to,
+    this.accountId,
+    this.categoryId,
+    this.flowType,
+  });
+
+  final String? q;
+  final DateTime? from;
+  final DateTime? to;
+  final int? accountId;
+  final int? categoryId;
+  final FlowType? flowType;
+
+  bool get isEmpty =>
+      q == null && from == null && to == null && accountId == null && categoryId == null && flowType == null;
+
+  TransactionsFilter copyWith({
+    String? Function()? q,
+    DateTime? Function()? from,
+    DateTime? Function()? to,
+    int? Function()? accountId,
+    int? Function()? categoryId,
+    FlowType? Function()? flowType,
+  }) {
+    return TransactionsFilter(
+      q: q != null ? q() : this.q,
+      from: from != null ? from() : this.from,
+      to: to != null ? to() : this.to,
+      accountId: accountId != null ? accountId() : this.accountId,
+      categoryId: categoryId != null ? categoryId() : this.categoryId,
+      flowType: flowType != null ? flowType() : this.flowType,
+    );
+  }
+}
+
+class TransactionsState {
+  const TransactionsState({
+    this.items = const [],
+    this.page = 1,
+    this.pageSize = 50,
+    this.total = 0,
+    this.loading = false,
+    this.loadingMore = false,
+    this.error,
+  });
+
+  final List<TransactionOut> items;
+  final int page;
+  final int pageSize;
+  final int total;
+  final bool loading;
+  final bool loadingMore;
+  final Object? error;
+
+  bool get hasMore => items.length < total;
+
+  TransactionsState copyWith({
+    List<TransactionOut>? items,
+    int? page,
+    int? pageSize,
+    int? total,
+    bool? loading,
+    bool? loadingMore,
+    Object? error,
+    bool clearError = false,
+  }) {
+    return TransactionsState(
+      items: items ?? this.items,
+      page: page ?? this.page,
+      pageSize: pageSize ?? this.pageSize,
+      total: total ?? this.total,
+      loading: loading ?? this.loading,
+      loadingMore: loadingMore ?? this.loadingMore,
+      error: clearError ? null : (error ?? this.error),
+    );
+  }
+}
+
+/// Filters + paginated results for Операции. `refresh()` restarts from page 1
+/// (called on build and on every filter change); `loadMore()` appends the
+/// next page for infinite scroll / the "ещё" button.
+class TransactionsController extends Notifier<TransactionsState> {
+  TransactionsFilter filter = const TransactionsFilter();
+
+  @override
+  TransactionsState build() {
+    Future.microtask(refresh);
+    return const TransactionsState(loading: true);
+  }
+
+  Future<void> setFilter(TransactionsFilter Function(TransactionsFilter) update) {
+    filter = update(filter);
+    return refresh();
+  }
+
+  Future<void> refresh() async {
+    state = state.copyWith(loading: true, clearError: true);
+    try {
+      final r = await ref.read(apiProvider).getTransactionsApi().transactionsList(
+            from: filter.from,
+            to: filter.to,
+            accountId: filter.accountId,
+            categoryId: filter.categoryId,
+            flowType: filter.flowType,
+            q: (filter.q == null || filter.q!.isEmpty) ? null : filter.q,
+            page: 1,
+            pageSize: state.pageSize,
+          );
+      final page = r.data!;
+      state = TransactionsState(
+        items: page.items,
+        page: page.page,
+        pageSize: page.pageSize,
+        total: page.total,
+      );
+    } on DioException catch (e) {
+      state = state.copyWith(loading: false, error: e);
+    }
+  }
+
+  Future<void> loadMore() async {
+    if (state.loading || state.loadingMore || !state.hasMore) return;
+    state = state.copyWith(loadingMore: true, clearError: true);
+    try {
+      final next = state.page + 1;
+      final r = await ref.read(apiProvider).getTransactionsApi().transactionsList(
+            from: filter.from,
+            to: filter.to,
+            accountId: filter.accountId,
+            categoryId: filter.categoryId,
+            flowType: filter.flowType,
+            q: (filter.q == null || filter.q!.isEmpty) ? null : filter.q,
+            page: next,
+            pageSize: state.pageSize,
+          );
+      final page = r.data!;
+      state = state.copyWith(
+        items: [...state.items, ...page.items],
+        page: page.page,
+        total: page.total,
+        loadingMore: false,
+      );
+    } on DioException catch (e) {
+      state = state.copyWith(loadingMore: false, error: e);
+    }
+  }
+}
+
+final transactionsControllerProvider =
+    NotifierProvider<TransactionsController, TransactionsState>(TransactionsController.new);